jacquet



(No Model.) i 2 Sheets-Sheet 1. L. J. E. JAGQUET.

FLUID METER.

No. 248,655. Patented Oct. 25,1881.

WITNESSES? 2 t .8 8 h s W e 8 h S .2 T E U G m U m EU .L F L (No Model.)

Pate'ntedOot. 25,1881.

INVENTURI WITNESSES:

PlukvL'flu m. Washington. D c.

UNITED STATES PATENT OEErcE.

LEON J. E. JAOQUET, OF PARIS, FRANCE.

FLUID-METER.

SPECIFICATION forming 'part of Letters Patent No. 248,655, dated October 25, 1881.

Application filed June 25, 1881.

To all whom it may concern:

Be it known that I, LiioN JULEs EDOUARD JACQUET, a citizen of the French Republic, residing at Paris, France, have invented certain Improvements in Fluid-Meters, of which the following is a specification.

I This invention relates to that class of fluidmeters in which the fluid is received and discharged i'rom a cylinder on each side of a piston which plays therein. The capacity of the cylinder and the number of strokes of the piston therein determine the quantity of fluid which has passed through the meter, and the movement of the piston is utilized to register the quantity passed through by its action on the registering mechanism. The apparatus comprises three featuresthe measuring-cylinder and its pistons, the receiving and discharging chambers,with their valves and other mechanism, and the registering mechanism. The latter forms no part of my present invention, except so far as will be hereinafter distinctly set forth.

' In the drawings which serve to illustrate my invention, Figurel is a vertical section taken in the plane of the line 1 l in Fig.2. Fig. l

is a cross-section of the piston-rod on line an ar,

Fig. 1. Fig. 2 is a horizontal section through the casing, taken in the plane of the line 2 2 in Fig. l--thatis, in theplane of axes of the valvestems. Fig. 3 is a vertical section through the valve casing and chambers, the half on the right being taken in the plane of the line y y in Fig. 1, looking to the right, and the half on the left taken in the plane of the line 2 z in the same figure, looking to the left. Figs. 4 and 5 are respectively a side and front elevation, and Fig. 6 is a plan, of a seat or chair, which will be referred to more particularly hereinafter. Figs. 7 and S are respectively a front and side elevation of a knife-edged lever, which will be more particularly referred to hereinafter. Fig. 9 is afront elevation of a tie which connects the valve-stems. All of the detached views are on a larger scale than Figs. 1, 2, and 3.

L is a cylinder, which may be of cast-iron, with a thin lining-cylinder, a, of copper, brass, or other non-oxidizablemetal or material. This lining may be simply soldered or otherwise secured to the main cylinder at its upper end.

(No model.) Patented in France April 1, 188i.

In the cylinder plays a piston, N, which may be constructed of two cupped leather disks placed back to back and clamped between metal disks.

0 is a shell or casing mounted on the top of the cylinder L, and containing the valve mechanism and the several receiving and discharging chambers for the fluid. This chamber is readily removable, whereby the interior mechanism may be the better got at and examined.

A is a chamber which communicates directly with the cylinder L above the piston. D is a chamber which communicates with the cylinder, below the piston, through a passage, H. B is the induction-chamber, which is in direct communication with the induction pipe or inlet E, and O is the eduction-chamber, which is in direct communication with the eduction pipe or outlet G. These chambers communicate with each other through valve-orifices 0 o 0 0, which are controlled by puppet-valves K k K mounted adjustably on valve-stems E E, which play through the axes of the valve-orifices. The valves K k are seated inside the induction-chamber B, the valve K in the chamber A, and the valve 70 in the chamber 1). The arrangement is such that the valves 70 and k seat simultaneously, and the valves K and K simultaneously-the two former seat and the two latter lift at the same time, and vice versa. The valve-stems have hearings in screw-sockets b b in the outer wall of chamber D at their one end, and hearings in hushed sockets c c at their other end, and they are connected rigidly together by a cross-head, F. (Shown in elevation in Fig. 9.) Thus it will be seen that the two valve-stems and the cross-head form a rigid frame, and the valves are unable to move independently of each other. With the valves standin gin the position shown in thedrawin gs the fluid from the cylinder above the piston (which is depressed) is free to pass out through the chamber A, through one of the valve-oriflees 0, into the chamber 0, and thence through the eduction pipe or outlet G; and the fluid entering at the induction pipe or inlet E is free to pass into the chamber B, thence through one of the valve-orifices 0 into the chamber D, and thence to the cylinder under the piston through the passage H. Thus the piston will be lifted by the incoming fluid, and in lifting will force out the fluid above it. When it reaches the end of its upstroke it shifts the valves (by mechanism which is hereinafter described) and changes the direction of the currents. The fluid will now be free to pass from the chamber B, through one of the valve-oritices into the chamber A, and thence to the cylinder above the piston, while the fluid below the piston will be free to pass out through the passage H to the chamber D, and thence through one of the valve-orifices 0 to the chamber O and outlet G.

I will now describe the mechanism for shifting the valves through the medium of tappets on the moving piston-rod.

Referring to Figs. 4, 5, and 6, P is a chair or bearing-piece, mounted at three points on the casing O. This chair has guides M M to receive guide-flanges d d, Fig. 1, on the pistonrod Q, and a re-entering angular bearing, 0, to receive the upper edge or ridge of a blade-support, f,on an elbowlever, W. (Shown enlarged in Figs. 7 and 8.) The lower edge of the supportfrests on a spring, g, (see Figs. 1 and 3,) which is suspended by two rods, h h, hung on knife-edge supports 1 l, which rest on provisions on the casing 0. Thus it will be seen that the spring 9 serves to press the supportf upward and keep it firmly seated in the angle 6 of the chair P.

The lever W has two arms, I and J, arranged atright angles to each other,the vertical arm I being arranged to engage an aperture in the center of the cross-head F, and the horizontal arm J being arranged to alternately engage shoulders or projections R It on the piston-rod as it moves up and down. The bearings Z lof the suspension-rods are arranged vertically over the axis of the lever V. On each side of the lever W are arranged elbow-levers X X, pivoted loosely to said lever on apin, m. These elbow-levers have broader arms than those of the lever which arms are lettered t and j.

So far as described the operation is as follows: The piston (see Fig. 1) is supposed to have reached the end of its downstroke and shifted thevalves. As it rises again and nears the end of its upstroke the shoulder R takes under the arms j j of the side levers, which hang a little below the arm J of the central lever. These are lifted until they are level with the arm J, when all rise together. This pressure upward underthe arm J serves to swing the spring 9 until the blade-support f stands vertically. In assuming this position, however, the spring 9 is distended, and the blade f and lever WV, to which it is secured, placedin a position of unstable equilibrium,as will be well understood. In bringing thearms j of the side levers up to a level with the arm J, as above stated, the arms iof said levers are advanced beyond the arm I, and theynow, as the piston continues to rise, strike the front side of the openings in the cross-head F and push the valves slightly from their seats. The

fluid now rushes through the openings thus made,and an equilibrium is established which relieves the pressure on the valves. At this moment the piston reaches the end of its upstroke, the last movement being sufficient to disturb the unstable equilibrium of the bladesupport f and permit the spring to act upon the valves through the arm I with sutfieient force to push the valves k k off their seatsfar enough to seat the valves K K firmly. Thus it will be seen that the spring 9 serves to seat two of the valves, while the movement of the piston-rod serves to unseat the other two.

In its downward movement the shoulder R on the piston-rod acts on the upper side of the arms Jjj, and by a downward pressure produces a reversal of the operation last described, as will be well understood. At the moment the valves are so shifted the parts will assume the position shown in Figs. 1 and 2.

It may be well to remark that the levers X are not absolutely necessary; but in the larger meters,where the pressure on the seated valves is great, the strength of the spring 9 should be proportionately increased. This may be regulated by means of the nuts on the suspensionrodsh. Otherformsof springsthanthatshown may be employed-as, for instance, 9 may be a rigid bar suspended by or arranged to rest on springs.

V is a ratchet-wheel arranged to be rotated by means of pawls T pivoted to the piston-rod, and by this means to communicate motion to some good form of registering apparatus, which may be placed in a suitable casing, Y.

All of the parts exposed to the fluid should be non-oxidizable, and I prefer to construct the valves, valve-stems, 850., of brass.

My meter opposes very little obstruction to the passage of the fluid, and the valves shift so quickly as to prevent any leakage of fluid not measured. This is one of the most important features of my meter.

I am aware that there are various forms of spring-valve movements used in fluid-meters, the valve being held in place by means of latches while the spring is being compressed by the movement of the piston; and I am also aware that an oscillating weight arranged to topple over when brought to a vertical position by the movement of the piston has been used, and I make no claim to these features, broadly.

Having thus described my invention, I claim-- 7 I. A fluid-meter comprising the followingnamed elementsthat is to say: a cylinder, 9. piston which plays or reciprocates therein, chambers A and D, which communicate with opposite ends of the cylinder and also with the induction and eduction chambers by four oriflees controlled by valves, the said induction and eduction chambers, the four valves, two in the induction-chamber, one in the chamber A, and one in the chamber D, and all arranged to move together in unison, the elbow-lever W and its spring, and the piston-rod provided with projections to actuate said lever and thus shift the valves, all combined and arranged to operate substantially as set forth.

2. In a fluid-meter, the mechanism for first lifting the valves slightly from their seats by direct pressure of the piston, whereby pressure is removed from the said valves, and then shifting them suddenly by spring-pressure independent of the piston, which consists of the elbow-lever W, mounted on the spring g, the elbow lever or levers X, mounted on the lever W, and the bar or cross-head which couples the valves together, provided with an aperture to engage the upright arms of the levers W and X, all arranged to operate substantially as set forth.

3. The combination, with the cylinder and its inclosed piston, of the chambers A, B, C, and D, the inlet and outlet E and G, the valvestems E E, mounted in the casing of the said chambers, the valves K k K 70, fixed to said stems, and arranged to close the valve-orifices 0 0, the cross-head F, the chair P, elbow-lever W, blade --support f, and spring g, hung as shown, all arranged to operate substantially as and for the purposes set forth.

4. A fluid-meter comprising a cylinder, L, piston N, piston-rod Q, provided with projections R and R, the casing O, chambers A, B, (l, and D, inlet E, outlet G, valve-stems E E, cross-head F, valves K k K is, spring y, suspended as shown, elbow-levers WXX, bladebearingf, and chair P, all arranged to operate substantially as herein set forth.

In Witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

LEON JULES EDOUARD JACQUET.

Witnesses: I

R0131. M. HOOPER, CHARLES MARDELET. 

